Пример #1
0
 def ticks(self,m=10):
     start = self._domain[0]
     end   = self._domain[-1]
     reverse = end < start
     _min = float(end if reverse else start)
     _max = float(start if reverse else end)
     span = _max - _min
     
     # test special degenerate cases
     if span == 0 or math.isinf(span):
         return _min
     
     step = pv.logFloor(span / m, 10)
     err = m / (span / step)
     if err <= 0.15: step *= 5
     if err <= 0.75: step *= 2
     start =  math.ceil(_min / step) * step
     end   = math.floor(_min / step) * step
     self._tickFormat = pv.Format.number().fractionDigits( max(0, math.floor(pv.log(step,10) + 0.01)) )
     ticks = range(start, end + step, step)
     
     return reversed(ticks) if reverse else ticks
Пример #2
0
 def nice(self):
     domain = self.domain()
     self.domain( pv.logFloor(domain[0],self._base), pv.logCeil(domain[1],self_base) )
     return self